Joshua 11:1
And it came to pass, when Jabin king of Hazor had heard those things, that he sent to Jobab king of Madon, and to the king of Shimron, and to the king of Achshaph, And it came to pass, when Jabin king of Hazor had heard those things, that he sent to Jobab king of Madon, and to the king of Shimron, and to the king of Achshaph,
Jabin ruled Hazor in the north and took the lead in answering Israel's southern victories by organizing resistance among the northern kings. He sent messages to neighboring monarchs to draw them into a combined league against the invaders. Hazor itself stood to the west of Lake Merom, and the waters of Merom became the gathering place where these allied armies assembled to meet Israel in battle.